Title: Topological Boundary Conditions and Domain Walls in Abelian Chern-Simons Theory

Abstract: I will classify topological boundary conditions in abelian Chern-Simons theory. The relation between bulk and boundary line operators will be discussed. Further, I will show that domain walls in Chern-Simons theory give consistent gluings of chiral and anti-chiral sectors to form a modular-invariant 2d Rational Conformal Field Theory.